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hi guys im new to the tuning world im having issues writing back to the ecm after making a minor change, all I wanted to do is turn the vats off so I could just make the ecm and harness stand alone. I can read the ecm and open it up, but when I go to write it back it just gives me a fail and timed out. any help would be much appreciated. thank you.
What kind of vehicle?
the motor is from a 2001 suburban 2500 with a 8.1l I put it in a 2003 Silverado 2500hd originally had a 6.0L in it. just want to turn vats off and write tune back to ecm. It will say writing then pop up with the timer and stay at 0 min and hours, than just says fail. tried with a bench harness also same results.
you'll need to open a support ticket for further assistance.
I had problem with write to ECM on my Mercedes GLA45 too, read ok but when write calibration back it fail to erase. Tech support working on it, still no solution yet.